符合標準EN55022 - B類標準意法半導體公司的EVLVIP17 - 5WCHG是5W開關電源（SMPS）設計，采用意法半導體公司的VIPER17HN，具有低待機功耗的特性，主要用作旅行電池充電器，如手機，掌上電腦和電子游戲的電池充電。充電器的輸(shu)入電(dian)壓為90 - 264Vac，頻率(lv)45 - 66Hz，輸(shu)出電(dian)壓5.1伏(fu)直(zhi)流(liu)± 2％，輸(shu)出電(dian)流(liu)1 ± 5％，電(dian)纜壓降補償（0.2V的/甲），無負載(zai)在高火線電(dian)壓的輸(shu)入功率(lv)低于100兆(zhao)瓦，短路(lu)保護，并在短路(lu)故(gu)障消除后自動重起，印刷電(dian)路(lu)板(ban)尺(chi)寸為53 × 26毫米，安全特性和EN60065兼容，電(dian)磁干擾滿足標準EN5022 - B類標準。

     本文介紹了EVLVIP17 - 5WCHG主要特性，電路板外形圖以及詳細電路圖和所用材料清單（BOM）的。 EVLVIP17 - 5WCHG：5瓦的低待機功耗電池充電器演示板的基礎上VIPER17HN的EVLVIP17 - 5WCHG演示板是一個5瓦的作為，如移動電話，掌上電腦和電子游戲應用旅行使用開關電源。該(gai)(gai)委員會的(de)目(mu)的(de)是證明(ming)該(gai)(gai)VIPER17HN離(li)(li)線高電(dian)(dian)壓轉(zhuan)換(huan)器的(de)性能(neng)。其低(di)(di)功(gong)(gong)耗(hao)和(he)其他(ta)特性，由于良好的(de)電(dian)(dian)氣(qi)性能(neng)實現(xian)(xian)。為了(le)獲得恒定(ding)的(de)輸(shu)出電(dian)(dian)壓和(he)電(dian)(dian)流(liu)調節（簡歷/消(xiao)委會），TSM1052簡歷/消(xiao)委會控制(zhi)器上使用(yong)的(de)次要方(fang)面。這TSM1052是非(fei)常(chang)適合這種類型的(de)應用(yong)，提供(gong)了(le)一個非(fei)常(chang)小(xiao)的(de)封裝(zhuang)非(fei)常(chang)低(di)(di)的(de)電(dian)(dian)流(liu)消(xiao)耗(hao)（采(cai)用(yong)SOT23 - 6L）。該(gai)(gai)轉(zhuan)換(huan)器實現(xian)(xian)了(le)一個反激拓撲結(jie)構(gou)，這是理想的(de)低(di)(di)功(gong)(gong)耗(hao)，低(di)(di)成本的(de)隔離(li)(li)轉(zhuan)換(huan)器。在小(xiao)學(xue)方(fang)面，VIPER17HN使用(yong)。該(gai)(gai)IC是毒(du)蛇(she)的(de)+家族，從(cong)它的(de)附加功(gong)(gong)能(neng)和(he)保護的(de)利(li)益(yi)。此設備，設計采(cai)用(yong)了(le)一個多芯片方(fang)案，包括(kuo)一個先(xian)進的(de)電(dian)(dian)流(liu)模式PWM控制(zhi)器和(he)雪崩的(de)小(xiao)幅下(xia)降，7封裝(zhuang)堅固(gu)800 V的(de)功(gong)(gong)率MOSFET。該(gai)(gai)轉(zhuan)換(huan)器在連(lian)續和(he)非(fei)連(lian)續導電(dian)(dian)模式工程取決于輸(shu)入(ru)電(dian)(dian)壓（電(dian)(dian)路有一個范圍廣闊的(de)輸(shu)入(ru)）和(he)輸(shu)出負載(zai)。

     該控制(zhi)(zhi)器(qi)后綴為(wei)“H”規(gui)定，開關頻率(lv)是115千(qian)赫，內部固(gu)定的(de)，允許(xu)的(de)功率(lv)元(yuan)件減(jian)少。應(ying)用程序(xu)設計，以(yi)降低(di)整體元(yuan)件數量和適配器(qi)的(de)成本。輸(shu)入部分(fen)包括(kuo)一個浪涌電(dian)流限制(zhi)(zhi)和故(gu)障(zhang)保護，arectifier橋，兩(liang)條電(dian)解電(dian)容(rong)和大(da)量作為(wei)前電(dian)感熔(rong)斷電(dian)阻器(qi)高(gao)端(duan)AC - DC轉換(huan)器(qi)和EMC濾(lv)波器(qi)。

    變(bian)(bian)(bian)壓(ya)器(qi)是(shi)一個(ge)層類型，利(li)用(yong)一個(ge)標準的(de)(de)(de)EF12.6鐵(tie)氧體磁(ci)芯(xin)，并與大(da)約75 V電(dian)(dian)(dian)(dian)(dian)壓(ya)設計(ji)的(de)(de)(de)反映(ying)。這(zhe)個(ge)特點(dian)是(shi)變(bian)(bian)(bian)壓(ya)器(qi)繞(rao)組的(de)(de)(de)技術，消除了常用(yong)的(de)(de)(de)?1安(an)全(quan)電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)的(de)(de)(de)需(xu)要之間的(de)(de)(de)主要和次要方(fang)面(mian)。一個(ge)RCD鉗位(wei)網絡用(yong)于漏感消磁(ci)。該電(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)啟動(dong)是(shi)由(you)內(nei)部(bu)管(guan)理，高(gao)壓(ya)的(de)(de)(de)VIPER17HN啟動(dong)發電(dian)(dian)(dian)(dian)(dian)機。這(zhe)條賽道(dao)的(de)(de)(de)典型匯3電(dian)(dian)(dian)(dian)(dian)流從(cong)漏極引腳和收費(fei)內(nei)徑電(dian)(dian)(dian)(dian)(dian)容(rong)。這(zhe)個(ge)電(dian)(dian)(dian)(dian)(dian)流值(zhi)減少到(dao)0.6毫安(an)在有保障的(de)(de)(de)干預，以提(ti)高(gao)試用(yong)期重新(xin)啟動(dong)，從(cong)而減少對永久性故(gu)障的(de)(de)(de)情(qing)況(kuang)下(xia)，功率器(qi)件的(de)(de)(de)壓(ya)力(li)。為(wei)(wei)VIPER17HN電(dian)(dian)(dian)(dian)(dian)源(yuan)獲得自(zi)我供(gong)應從(cong)一激(ji)配置連(lian)接(jie)的(de)(de)(de)變(bian)(bian)(bian)壓(ya)器(qi)繞(rao)組。該電(dian)(dian)(dian)(dian)(dian)路(lu)提(ti)供(gong)電(dian)(dian)(dian)(dian)(dian)壓(ya)，理想情(qing)況(kuang)下(xia)，直接(jie)成比例的(de)(de)(de)輸出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)。在實(shi)踐中，因為(wei)(wei)這(zhe)是(shi)沒有Y型帽變(bian)(bian)(bian)壓(ya)器(qi)有很高(gao)的(de)(de)(de)漏感，作為(wei)(wei)峰值(zhi)初(chu)級(ji)電(dian)(dian)(dian)(dian)(dian)流增大(da)selfsupply電(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)(de)(de)增加。無(wu)論(lun)如何，由(you)于廣泛內(nei)徑的(de)(de)(de)VIPER17HN電(dian)(dian)(dian)(dian)(dian)壓(ya)范圍的(de)(de)(de)情(qing)況(kuang)（從(cong)8.5 V至23五(wu)）正(zheng)確(que)的(de)(de)(de)供(gong)應總是(shi)提(ti)供(gong)。內(nei)部(bu)MOSFET的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流限制降(jiang)低（從(cong)0.4的(de)(de)(de)面(mian)值(zhi)）通過(guo)使(shi)用(yong)電(dian)(dian)(dian)(dian)(dian)阻(zu)R16連(lian)接(jie)到(dao)續針。

     有(you)(you)了這個功(gong)能(neng)(neng)(neng)，IDlim定為280毫安，允許使(shi)(shi)(shi)(shi)用(yong)(yong)(yong)(yong)小(xiao)(xiao)型(xing)變壓(ya)(ya)(ya)器5 W輸出(chu)（EF12.6使(shi)(shi)(shi)(shi)用(yong)(yong)(yong)(yong)）在(zai)(zai)不飽和(he)(he)的(de)(de)(de)(de)風險。分(fen)壓(ya)(ya)(ya)器的(de)(de)(de)(de)節(jie)電(dian)(dian)(dian)沒有(you)(you)安裝（所以禁用(yong)(yong)(yong)(yong)此功(gong)能(neng)(neng)(neng)），以節(jie)省電(dian)(dian)(dian)能(neng)(neng)(neng)特別是(shi)空載功(gong)耗(hao)。該VIPER17HN有(you)(you)幾個內(nei)置的(de)(de)(de)(de)功(gong)能(neng)(neng)(neng)，如抖動，以減(jian)少(shao)電(dian)(dian)(dian)磁干擾的(de)(de)(de)(de)問題，軟啟(qi)動頻率(lv)，和(he)(he)突發的(de)(de)(de)(de)低(di)功(gong)耗(hao)模式工作在(zai)(zai)輕負載和(he)(he)無負載條件下。過流，過載和(he)(he)過溫保護(hu)(hu)也是(shi)在(zai)(zai)內(nei)部實施，并(bing)保證董事會的(de)(de)(de)(de)安全運行。在(zai)(zai)中學方面，TSM1052恒(heng)(heng)壓(ya)(ya)(ya)恒(heng)(heng)電(dian)(dian)(dian)流（CV / CC）的(de)(de)(de)(de)控制(zhi)器使(shi)(shi)(shi)(shi)用(yong)(yong)(yong)(yong)。在(zai)(zai)TSM1052和(he)(he)光電(dian)(dian)(dian)二(er)極管(guan)(guan)的(de)(de)(de)(de)光電(dian)(dian)(dian)耦合器是(shi)直接供應的(de)(de)(de)(de)輸出(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)。其電(dian)(dian)(dian)源的(de)(de)(de)(de)TSM1052（為1.7 V分(fen)鐘）電(dian)(dian)(dian)壓(ya)(ya)(ya)范(fan)(fan)圍內(nei)進行精確的(de)(de)(de)(de)恒(heng)(heng)定電(dian)(dian)(dian)流調(diao)節(jie)，即使(shi)(shi)(shi)(shi)輸出(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)降至1.5伏(fu)特，1.6五，此范(fan)(fan)圍通常(chang)為所有(you)(you)電(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)器應用(yong)(yong)(yong)(yong)不夠(gou)。當輸出(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)低(di)于(yu)(yu)(yu)這一限(xian)制(zhi)電(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)監(jian)管(guan)(guan)，屬于(yu)(yu)(yu)損失，保護(hu)(hu)了口(kou)腔扁平苔蘚調(diao)用(yong)(yong)(yong)(yong)和(he)(he)系(xi)統始于(yu)(yu)(yu)呃(e)逆模式下工作。如果由于(yu)(yu)(yu)某種(zhong)原因，目前(qian)監(jian)管(guan)(guan)的(de)(de)(de)(de)需要到(dao)零輸出(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)水平（即短路(lu)），它是(shi)足(zu)夠(gou)提供TSM1052和(he)(he)帶有(you)(you)電(dian)(dian)(dian)壓(ya)(ya)(ya)等于(yu)(yu)(yu)輸出(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)(de)總和(he)(he)，從TR1C電(dian)(dian)(dian)壓(ya)(ya)(ya)二(er)極管(guan)(guan)纏(chan)繞在(zai)(zai)前(qian)進的(de)(de)(de)(de)方式糾(jiu)正。有(you)(you)關這一具(ju)體(ti)原理(li)圖，請(qing)使(shi)(shi)(shi)(shi)用(yong)(yong)(yong)(yong)TSM1052見應用(yong)(yong)(yong)(yong)筆記(ji)AN2448（超(chao)小(xiao)(xiao)型(xing)電(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)器更多信息）。

     R7的電(dian)(dian)阻器被(bei)添加到提供電(dian)(dian)纜壓(ya)(ya)降(jiang)補償(chang)。較(jiao)高的輸出(chu)電(dian)(dian)流，輸出(chu)電(dian)(dian)壓(ya)(ya)越高，對電(dian)(dian)路(lu)板的輸出(chu)端測量。這樣(yang)，對電(dian)(dian)纜連(lian)接的單位負(fu)載(zai)電(dian)(dian)壓(ya)(ya)降(jiang)得到補償(chang)，同時(shi)提供給負(fu)載(zai)的電(dian)(dian)壓(ya)(ya)基本不變。更多的細節，因為r7同樣(yang)等于九號，輸出(chu)電(dian)(dian)壓(ya)(ya)為增(zeng)加0.2毫安的輸出(chu)電(dian)(dian)流壓(ya)(ya)。這一數額的基礎上選擇(ze)為這些應(ying)用程序（通常約為0.2-0.3Ω）典型的電(dian)(dian)纜電(dian)(dian)阻。